Backsplash Tile Question

I am going to install tile on a clean drywall surface on the backsplash in my kitchen. What should I use to adhere it? I bought mortar versabond. Now I am reading I should have gotten mastic? What is mastic?

The tile is ceramic 1 foot squares made up of small tiles. Any help is appreciated.

Backsplash Tile Question

Backsplash Tile Question

Mastic can't be used in areas that get wet (specifically tubs and showers). Mastic makes a mess of your tools and your tile if you aren't perfectly clean. Almost every time I see tile falling off the wall, they were mounted with mastic years ago.

Thinset is easy to clean up, and forms a crystalline structure bond since it is a cement-based product. If you get it on the face of a tile you can easily clean it up before it dries. It cleans off of your tools easily.